S&P 500 sectors: healthcare -2.55%, energy +1.01%

The stark sector split signals a defensive rotation, with energy's gain against broad declines pointing to capital seeking inflation-hedge or supply-driven plays rather than growth exposure. Healthcare's sharp drop, the largest loser, suggests sector-specific headwinds outweighing the general risk-off tone, and financials' slide indicates rate or credit sensitivity. For markets, the question is whether this is a one-day repositioning or the start of a persistent trend where energy leadership persists while rate-sensitive and defensive sectors diverge further.